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TI-2026-73657 Aliases CVE-2026-88082

Heap overflow in Microsoft SQL Server lets local users gain higher privileges

Priority LOW 32CWE-122Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-122 and the CVSS impact.

Summary

Microsoft SQL Server 2019, 2022 and 2025 builds in the listed ranges are affected. A heap-based buffer overflow (CWE-122) lets an authorized attacker gain higher privileges on the local system. The attacker needs local access and low privileges, and the attack complexity is high.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Description from the CNA

Heap-based buffer overflow in SQL Server allows an authorized attacker to elevate privileges locally.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00231 14th percentileScored 2026-11-07
Fix Fixed Microsoft SQL Server 2019 (GDR) (Microsoft): 15.0.2200.2Microsoft SQL Server 2019 for x64-based Systems (CU32) (Microsoft): 15.0.4500.2+4 more products

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftMicrosoft SQL Server 2019 (GDR)15.0.0 to before 15.0.2200.215.0.2200.2Patch availableCNA
MicrosoftMicrosoft SQL Server 2019 for x64-based Systems (CU32)15.0.4003.23 to before 15.0.4500.215.0.4500.2Patch availableCNA
MicrosoftMicrosoft SQL Server 2022 (GDR)16.0.0 to before 16.0.1210.316.0.1210.3Patch availableCNA
MicrosoftMicrosoft SQL Server 2022 for x64-based Systems (CU27)16.0.4003.1 to before 16.0.4305.516.0.4305.5Patch availableCNA
MicrosoftMicrosoft SQL Server 2025 for x64-based Systems (CU9)17.0.4006.2 to before 17.0.5015.417.0.5015.4Patch availableCNA
MicrosoftMicrosoft SQL Server 2025 for x64-based Systems (GDR)17.0.1050.2 to before 17.0.1145.417.0.1145.4Patch availableCNA
  • Microsoft SQL Server 2019 (GDR) VendorMicrosoft Affected 15.0.0 to before 15.0.2200.2 Fixed in 15.0.2200.2 Patch available CNA
  • Microsoft SQL Server 2019 for x64-based Systems (CU32) VendorMicrosoft Affected 15.0.4003.23 to before 15.0.4500.2 Fixed in 15.0.4500.2 Patch available CNA
  • Microsoft SQL Server 2022 (GDR) VendorMicrosoft Affected 16.0.0 to before 16.0.1210.3 Fixed in 16.0.1210.3 Patch available CNA
  • Microsoft SQL Server 2022 for x64-based Systems (CU27) VendorMicrosoft Affected 16.0.4003.1 to before 16.0.4305.5 Fixed in 16.0.4305.5 Patch available CNA
  • Microsoft SQL Server 2025 for x64-based Systems (CU9) VendorMicrosoft Affected 17.0.4006.2 to before 17.0.5015.4 Fixed in 17.0.5015.4 Patch available CNA
  • Microsoft SQL Server 2025 for x64-based Systems (GDR) VendorMicrosoft Affected 17.0.1050.2 to before 17.0.1145.4 Fixed in 17.0.1145.4 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:sql_server_2019:*:*:*:*:*:*:x64:*15.0.2000.5 to before 15.0.2200.2; 15.0.4003.23 to before 15.0.4500.2VulnerableMicrosoft
cpe:2.3:a:microsoft:sql_server_2022:*:*:*:*:*:*:x64:*16.0.1000.6 to before 16.0.1210.3; 16.0.4003.1 to before 16.0.4305.5VulnerableMicrosoft
cpe:2.3:a:microsoft:sql_server_2025:*:*:*:*:*:*:x64:*17.0.1000.7 to before 17.0.1145.4; 17.0.4006.2 to before 17.0.5015.4VulnerableMicrosoft
  • cpe:2.3:a:microsoft:sql_server_2019:*:*:*:*:*:*:x64:* Versions 15.0.2000.5 to before 15.0.2200.2; 15.0.4003.23 to before 15.0.4500.2 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:sql_server_2022:*:*:*:*:*:*:x64:* Versions 16.0.1000.6 to before 16.0.1210.3; 16.0.4003.1 to before 16.0.4305.5 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:sql_server_2025:*:*:*:*:*:*:x64:* Versions 17.0.1000.7 to before 17.0.1145.4; 17.0.4006.2 to before 17.0.5015.4 Vulnerable ·Microsoft

Remediation

Install the fixed versions for each product: Microsoft SQL Server 2019 (GDR) 15.0.2200.2, Microsoft SQL Server 2019 for x64-based Systems (CU32) 15.0.4500.2, Microsoft SQL Server 2022 (GDR) 16.0.1210.3, Microsoft SQL Server 2022 for x64-based Systems (CU27) 16.0.4305.5, Microsoft SQL Server 2025 for x64-based Systems (CU9) 17.0.5015.4, and Microsoft SQL Server 2025 for x64-based Systems (GDR) 17.0.1145.4.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

  • Fix · CNA Microsoft SQL Server 2019 (GDR) (Microsoft) Fixed in 15.0.2200.2
  • Fix · CNA Microsoft SQL Server 2019 for x64-based Systems (CU32) (Microsoft) Fixed in 15.0.4500.2
  • Fix · CNA Microsoft SQL Server 2022 (GDR) (Microsoft) Fixed in 16.0.1210.3
  • Fix · CNA Microsoft SQL Server 2022 for x64-based Systems (CU27) (Microsoft) Fixed in 16.0.4305.5
  • Fix · CNA Microsoft SQL Server 2025 for x64-based Systems (CU9) (Microsoft) Fixed in 17.0.5015.4
  • Fix · CNA Microsoft SQL Server 2025 for x64-based Systems (GDR) (Microsoft) Fixed in 17.0.1145.4

Timeline

  1. 2026-10-13 Threatist record created from CVE-2026-88082
  2. 2026-10-16 CISA SSVC decision points changed
  3. 2026-10-30 Affected versions changed · CNA

References

Patch 1

  • TI-2024-19132 Microsoft ODBC Driver for SQL Server Remote Code Execution Vulnerability CVSS 3.1HIGH 8.8
  • TI-2025-31689 Microsoft SQL Server Information Disclosure Vulnerability CVSS 3.1HIGH 7.5
  • TI-2026-39042 Microsoft SQL Server Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2026-39041 Microsoft SQL Server Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2024-25283 Microsoft SQL Server Elevation of Privilege Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2024-24853 Microsoft SQL Server Elevation of Privilege Vulnerability CVSS 3.1CRITICAL 9.8
See all 206 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences